<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>HTTP Cache</title>
</head>
<body>
  <h1>HTTP 缓存</h1>

  <h2>强制缓存</h2>
  <img src="./logo.png" alt="logo.png">
  <hr>

  <h2>协商缓存</h2>
</body>
</html>